Anti-collagen type XIII alpha 1 antibodies enable researchers to detect and measure the collagen type XIII alpha 1 antigen in biological samples. This target is a reported synonym of the COL13A1 gene, which encodes collagen type XIII alpha 1 chain. This protein is known to function in cell differentiation and cell adhesion, among other biological roles. The human version of collagen type XIII alpha 1 has a canonical amino acid length of 717 residues and a protein mass of 70 kilodaltons, although 11 isoforms have been identified. It is reported to be localized in the cell membrane of cells and widely expressed in many tissue types. Other names for this target antigen include CMS19, COLXIIIA1, and collagen alpha-1(XIII) chain.